From: "Barbier, Renaud" <renaud.barbier@abaco.com>
To: "linux-mtd@lists.infradead.org" <linux-mtd@lists.infradead.org>
Subject: S25FL512 vs S25FS512
Date: Wed, 1 Sep 2021 16:51:23 +0000 [thread overview]
Message-ID: <MN2PR16MB313511219F7BFB2692C4C8B191CD9@MN2PR16MB3135.namprd16.prod.outlook.com> (raw)
Hello,
I bought a NXP ls1046ard evaluation board and saw some issues erasing the SPI NOR from my boot loader or ICE.
The boot loader reported the flash as being a S25FL512 which is a uniform (256KiB) sector SPI NOR as per manufacturing ID 1 and device id 2
The eval board has in fact a S25FS512 SPI NOR which is by default a bottom boot flash. This can be disabled through a configuration register in the SPI NOR.
I also see that Linux describes both the S25FL512 and S25FS512 as uniform sector flash:
{ "s25fl512s", INFO6(0x010220, 0x4d0080, 256 * 1024, 256,
SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ |
SPI_NOR_HAS_LOCK | USE_CLSR) },
{ "s25fs512s", INFO6(0x010220, 0x4d0081, 256 * 1024, 256,
SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ | USE_CLSR)
According to Cypress PDF https://www.cypress.com/file/177971/download, this SPI NOR S25FL512 is indeed a uniform sector flash but with a device ID of 0x19.
While the Spansion documentation I found (https://datasheetspdf.com/pdf-file/831993/SPANSION/S25FL512S/1 ) described it with a Device ID of 0x2.
The S25FS512S has Device ID 0x2 according to Cypress documentation https://www.cypress.com/file/216376/download and is a bottom boot flash.
Is the SPI support for S25FS512 in Linux 5.14 disabling the bottom boot feature? I have not found it in the code. Only something related to page size.
Cheers,
Renaud
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next reply other threads:[~2021-09-01 16:52 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-01 16:51 Barbier, Renaud [this message]
2021-09-08 23:32 ` S25FL512 vs S25FS512 Michael Walle
2021-09-09 8:37 ` Barbier, Renaud
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